Lubricating device.



PATENTED JULY 28, 1908'.

c. J. PIHL.

LUBRIGATING DEVICE.

APPLIQATION FILED OCT. 24, 1996.

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[(lfneAA e4 1 altafbne UNITED STATES IFA'IENT OFFICE. CARL .T. PIHL, OF LOWELIJ,.MASSAGHUSETTS, ASSIGNOR TO GARDNER W. PEARSON, OF

LOWELL, MASSACHUSETTS.

LUBRICA'IING DEVICE.

Specification of Letters Patent.

Patented July as, 1908.

To all whom it may concern.

Be it known that I, CARL J. PIHL, a citizen of the United States, residing at Lowell, in the county of Middlesexand State of Massachusetts, have invented certain new and useful Improvements in Lubricating Devices, of which the following is a specification.

My invention relates to lubricating devices for the bearings of vertical shafting.

It is especially adaptable for the bearings of high speed machines, such as centrifugal separators, candy machines, etc. Its principal objects are to provide a sim 1e and compact device which will keep the earing and shaft well lubricated at all times.

My device is illustrated in the accompanying drawings, in which Figure l is a sectional view of a bearing, in which my device is applied but with the absorbent material left out. Fig. 2 is a top view of Fig. 1. Fig. 3 is a top view of the removable inside bearing. Fig. 4 is aview of the inside bearing detached also showing the absorbent material. Fig 5 is an enlarged sectional view on line Y of Fig. 4. Fig. 6 is a similar view to Fig. 4 but with a wire in place of the absorbent material.

A is the inside bearing, of brass or other suitable bearing material bored of a size to make a running fit with the shaft which is to be supported.

B is the outershell, within which the inside bearing fits closely.

C C are s rings which render the bearing elastic and is a check nut which holds the springs in place.

D is the casing which supports the outer shell B.

The inside bearingA is .of cylindrical form and isprovided with flanges 12 and 13 which are of such diameter as to fit snugly, within the orifice in the outer shell B. This orifice, preferably, tapers slightly from top to bottom'and flange 12 is slightly larger than flange 13 and both correspond with the tapering orifice in outer shell B. These flanges 12 and 13 leave between them an annular recess 14, in which I may place absorbent material F, preferably wicking or other rope like materlal capable of being wound therein.

The top surface of bearing A and flange12 is recessed 'to form the annular channel 15 which receives the oil and retains any excess. An oil hole 16 connects channel 15 with recess 14. Inside bearing A is preferably channeled on its inside surface to form the annular groove 17 which serves to prevent the shaft from rattling and helps to distribute the oil. A slot 18 connects the annular recess 14 with the inside surface of bearing A, whereby the lubricating oil may pass from recess 14 onto the shaft. This slot 18 is narrower on the inside than on the outside -to permit the elastic absorbent material G to be pressed into it but not through it. I prefer to use in this slot 18 a strip of elastic felt G and I force this into the slot and then hold it in place by means of the wicking F. This construction insures a steady supply of oil to the shaft and when the absorbent material F or G wears out, it is very easy to knock out the inside bearing A and replace the absorbent material. The wickin F serves as a reservoir for the oil and the fe t G serves as a feeder or elastic brush. A greater or less amount of wicking may be used or it may be omitted entirely.

Fig. 6 shows a modification wherein the absorbent material F is dispensed with entirely and elastic material G is held in place by a wire K wound around inside bearing A, between its flanges. In this case, the space 14 itself serves as a reservoir and the oil is fed to the shaft through slot 18 and by the capillary attraction of elastic brush G.

What I claim as my invention and desire to cover b Letters Patent is 1. In aubricating device, an outer shell, formed with a ta 'ering orifice, an inner bearing rovided wit two external flanges fitted insi e said tapering orificeand comprising an annular channel in the top and an oil hole through the u per flange as well as a radial slot, combine with absorbent material between the flanges.

2. In a lubricating device, an outer shell, an inner bearing provided with two external flanges fitted inside the outer shell and comprising an oil hole through the top flangeand a tapering radial slot through the inner bearing between the flanges, combined with elastic absorbent material in the radial slot, and absorbent material wound between the flanges as described.

In testimony whereof I affix my signature in presence of two witnesses.

CARL J. PIHL. 

